Reservoir for vapor-burners.



PATENTED MAR. 24, 1903.

` W MITCHELL RESERVOIR EUR VAPOR BURNERS. APPLIOATION FILED APB. e,1901. RENBWBD Nov. 1a. 1902.

'No MODEL UNITED STATES PATENT OFFICE.'

MITCHELL GAS GENERATOR AND A CORPORATION OF NEW JERSEY.

MASSACHUSETTS,

BURNER COMPANY, OF BOSTON,

RESERVOIR FoRvAPoR-BURNERS.

SPECIFICATION forming part of Letters Patent N o. 723,780, dated March24, 1903.

Original application filed October 3, 1900, Serial N o. 31,810. 'Dividedand this application filed April 6,1901. Renewed November 13, 1902.Serial No. 131,264.Y (No InodelJ To all whom t may concern: g

Beit known that I, WILLIS MITCHELL, a citizen of the United States,residing at Malden, in the county of Middlesex andv State ofMassachusetts, and useful Improvements in Reservoirs for Vapor-BurningHeaters; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as vwill enable others skilledin the art to which it appertains to make and use the same.

This invention relates to reservoirs for vapor-burning heatersespecially adapted to be mounted on and moved with a smoothingiron,although available for use with other implements, utensils, andstructures, movable and immovable; and it consists in the constructionand combination of parts hereinafter set forth and claimed.

In the accompanying drawings, Figure l represents a central section ofareservoir embodying myinvention and the handle and supports whereby itis attached to a smoothing-iron. (Not shown.) Fig. 2 represents a planview of the reservoir and coupling-block without the superposed parts;and Fig. 3 represents a detail plan View, taken from below, of theair-receptacle and the block which supports the same.

A designates a smoothing-iron handle, having recesses a in its upperends to receive the upper ends of a U-shaped handle-support B, the lowerpart of which is broken away, the said ends being fastened by screws ato the said handle. A bifurcated reservoir-support O is similarlyfastened at its lower ends by screws a2 to the said handle-support andis provided with a screw-threaded upwardlypresented centrally-bored neckO', on which is screwedv a centrally-bored metallic coupling-block P.The bore of said neck isextended obliquely downV through one of the armsof the reservoir-support and out at its side to receive a gasolene-pipeH for supplying the smoothing-iron burner, (not shown,) making acontinuous passage from the said pipe to a socket p, formed in the topof the said coupling-block and filled with filtering have inventedcertain newV -by a cap S3,

VVmaterial p. The said coupling-block constitutes the base and means ofattachment of the gasolene-reservoir P. The bifurcated standard O. isbent out laterally, as shown in Fig. 1, to avoid the handle A and affordroom for grasping the same. The top of said reservoir is provided with aconcavity O, having a central opening. On the edge of said opening restsan annular external flange q on the upper part of a tubularinternallyscrew-threaded coupling-block Q, extending down into the saidreservoir. The top of this coupling-block is provided with an annulargroove q', Fig. 2, having a raised concentric annular ridge q2 in itsmiddle. The bore of this block receives a corresponding screwthreadedtubular stern V' of the base-block V, which supports a vertical air-pumpcylinder SA and a globular air-receptacle 'Lt exterior andconcentricthereto. These parts S and u are rigid with the said block,their lower ends fitting tightly on an annular shoulder or-Iiange V2thereof. The base-block V is provided with an oblique passage o abovesaid shoulder or flange V2, which passage connects the interior ofair-receptacle u. The said block V has also a tapering central downwardoutlet s, through which air is forced to the interior of the reservoir Fby the piston S2, operated in said cylinder by its piston-rod S', havinga knob or handle S4 screwed on its upper end. The said cylinder isclosedat its slightly-enlarged upper end t which is centrally perforated forthe passage of the said piston-rod and provided with aninternally-screw-threaded wall or annular flange t, that engages thesimilarly-threaded upper end t aforesaid. The said piston is providedwith..the usual packing S5.

The bore of tubular stem V., constituting an extension of out-let s, isenlarged below the latter to receive a valve R for closing the same, anda helical spring R', surrounding the stem fr of said valve and holdingthe latter up against its seat. The said valve-rod works through acentral hole r2 in a detachable block or nut 1", this hole being largeenough to allow the passage of air down around the said stem, althoughadditional holes e', Fig. 3, in nut or block r may be used, ifpreferred.

The bottom of the base-block V has an annular ridge 00, which rests onthe ridge q2 of block O' when the blocks O and V are screwed together. Aring W of fibrous packing is fitted into groove q, and the ridges 00 andq2 bite into said packing-ring from above and below, making a tightjoint. The concavity o2 allows the air-receptacle fu, to be set lowerthan would otherwise be possible, thus increasing the compactness andstrength of my device. The said eoncavity leaves. also an annular spacearound it at the upper end of the reservoir, since the liquid fuel willnot rise higher than the central'opening through which it is supplied.This space receives air and the vapor or gas of said liquid fuel.

Each downward motion of the pump-piston in startingr the operation ofthe device drives airreceived through the inlet y down through outlet s,the bore of stem V', and the hole r2 into the reservoir, also throughoblique passage r into air-receptacle u, whereit is compressed. When thepiston moves upward, the valve R closes the outlet s, but leaves openthe passage c, through which and said bore and holes the compressed airwithin said receptacle u exerts pressure on the liquid in reservoir P.This pressure is increased by the reciprocating movement of the piston,but will continue feeding the liquid fuel for some time after suchmovement has ceased and until the pressure of vapor or gas in the saidreservoir is sufficient to that end.

I-Iaving thus described my invention, what I claim as new, and desire tosecure byLetters Patent, is-

1. A reservoir for liquid fuel having a tubular coupling-block fittedinto its top and extended down within it, in combination with anair-pump and air-receptacle, supported on the said reservoir, and abase-block for said pump and receptacle provided with a tubular stemwhich screws do-wn into the said coupling-block substantially as setforth.

2. A reservoir for liquid fuel having a tubular coupling-block fittedinto its top, in combination with an air-pump and an air-receptaclesupported on the said reservoir, and a base-block for said pump andreceptacle, having a stem which screws into said coupling-block, thesaid coupling-block being provided on its top with an annular groovehaving an annular ridge in its middle and the said base-block having onits bottom a corresponding ridge, in order that these ridges may beforced into interposed packing and make a tight joint when the blocksare screwed together substantially asset forth.

3. In combination with a reservoir for liquid fuel having in its top aconcavity with a central opening, a tubular block fitted into saidopening and an air-pump having a base attachment engaging with saidblock for mounting it thereon, an air-receptacle surrounding the saidpump, supported by the same base and set into the same concavity andmeans for conducting liquid from said reservoir substantially as setforth.

4. An air-pump and su rrounding air-receptacle, in combination with abase-block common thereto, having a bore and separate passages from saidbore to said receptacle and the pump-cylinder, a spring-pressed valveand a liquid-reservoir communicating with the said bore, the said valvebeing arranged to leave open the passage between the liquidreservoir andthe air-receptacle, while preventing the escape of air or gas fromeither of them to the pump-cylinder substantially as set forth.

In testimony whereof I afx my signature in presence of two witnesses.

WILLIS MITCHELL. Witnesses:

A. G. LEONARD, ALICE M. Rien.

